3D-ZIF scaffold derived carbon encapsulated iron nitride as a synergistic catalyst for ORR and zinc-air battery cathodes

Radwan, Amr; Jin, Huihui; Liu, Bingshuai; Chen, Zibo; Wu, Qian; Zhao, Xin; He, Daping; Mu, Shichun

doi:10.1016/j.carbon.2020.09.024

Cited by 70 publications

(34 citation statements)

References 45 publications

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“…[ 27 ] Although Fe–N–C catalysts with isolated FeN x sites have the highest atomic utilization rate and excellent catalytic activity, their catalytic activity center structure is so simple that they can only bond with single oxygen atom of intermediate product during oxygen reduction reaction. [ 12 , 16 , 18 ] The resulting terminal adsorption state will lead to the high O—O bond breaking energy and reduce the catalytic activity of FeN x potential. [ 28 ] Importantly, their active sites tend to isolate *OOH intermediates, resulting in side reactions that greatly lower the stability of the Fe–N–C catalyst.…”

Section: Catalytic Active Center and Coordination Of Fe–n–c Catalystsmentioning

confidence: 99%

“…Among TM–H–C catalysts, due to the relatively simple constitution and structure, the Fe–N–C catalyst is the most classical, and considered to be easy to understand the catalysis mechanism of TM–H–C catalysts. [ 12 ] Therefore, the rational design of Fe–N–C catalysts with improved stability is the sticking point to further obtain high‐performance TM–H–C non‐noble‐metal catalysts toward industrial applications.…”

Section: Introductionmentioning

confidence: 99%

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Stabilizing Fe–N–C Catalysts as Model for Oxygen Reduction Reaction

et al. 2021

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The highly efficient energy conversion of the polymer-electrolyte-membrane fuel cell (PEMFC) is extremely limited by the sluggish oxygen reduction reaction (ORR) kinetics and poor electrochemical stability of catalysts. Hitherto, to replace costly Pt-based catalysts, non-noble-metal ORR catalysts are developed, among which transition metal-heteroatoms-carbon (TM-H-C) materials present great potential for industrial applications due to their outstanding catalytic activity and low expense. However, their poor stability during testing in a two-electrode system and their high complexity have become a big barrier for commercial applications. Thus, herein, to simplify the research, the typical Fe-N-C material with the relatively simple constitution and structure, is selected as a model catalyst for TM-H-C to explore and improve the stability of such a kind of catalysts. Then, different types of active sites (centers) and coordination in Fe-N-C are systematically summarized and discussed, and the possible attenuation mechanism and strategies are analyzed. Finally, some challenges faced by such catalysts and their prospects are proposed to shed some light on the future development trend of TM-H-C materials for advanced ORR catalysis.

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Section: Catalytic Active Center and Coordination Of Fe–n–c Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stabilizing Fe–N–C Catalysts as Model for Oxygen Reduction Reaction

et al. 2021

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“…Recently, one of the most extensive methods used for obtaining MOF-derived ORR, OER, and HER catalysts is the direct carbonization method [ 88 , 89 ]. Through this method, numerous MOFs were applied such as Co‐MOF [ 90 ], Ni‐MOF [ 91 ], and Zn-MOF [ 77 ].…”

Section: Synthesis Protocols For Mof-derived Orr Oer and Her Catalystsmentioning

confidence: 99%

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

et al. 2021

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The core reactions for fuel cells, rechargeable metal–air batteries, and hydrogen fuel production are the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), which are heavily dependent on the efficiency of electrocatalysts. Enormous attempts have previously been devoted in non-noble electrocatalysts born out of metal–organic frameworks (MOFs) for ORR, OER, and HER applications, due to the following advantageous reasons: (i) The significant porosity eases the electrolyte diffusion; (ii) the supreme catalyst–electrolyte contact area enhances the diffusion efficiency; and (iii) the electronic conductivity can be extensively increased owing to the unique construction block subunits for MOFs-derived electrocatalysis. Herein, the recent progress of MOFs-derived electrocatalysts including synthesis protocols, design engineering, DFT calculations roles, and energy applications is discussed and reviewed. It can be concluded that the elevated ORR, OER, and HER performances are attributed to an advantageously well-designed high-porosity structure, significant surface area, and plentiful active centers. Furthermore, the perspectives of MOF-derived electrocatalysts for the ORR, OER, and HER are presented.

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“…Iron nitride with a composition of Fe 3 N is suitable for electrochemical purposes. One of the facile methods to increase the application efficiency of Fe 3 N is to encapsulate it in a porous carbon as a support and the composite exhibits a high surface area of 1027 m 2 g −1 with a pore size of 2.3 nm [ 184 ]. The synthesis proceeds with the formation of Fe 3 N from Fe 2 O 3 at 900°C under NH 3 atmosphere, which is then encapsulated inside ZIF-8 via sonication in methanol to obtain ZFN ( Figure 12 ).…”

Section: Synthesis Of Porous Mnsmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.

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3D-ZIF scaffold derived carbon encapsulated iron nitride as a synergistic catalyst for ORR and zinc-air battery cathodes

Cited by 70 publications

References 45 publications

Stabilizing Fe–N–C Catalysts as Model for Oxygen Reduction Reaction

Stabilizing Fe–N–C Catalysts as Model for Oxygen Reduction Reaction

Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

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